The flight distance from RAF Ascension Island (ASI) in Ascension Island, SH to Denver International Airport (DEN) in Denver, United States is 10,598 kilometers (6,585 miles / 5,723 nautical miles). The estimated flight time for this route is approximately 13h, flying northwest at a heading of 310°.

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

This is an international route connecting SH with United States. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 23:08 in Ascension Island, it's 16:08 in Denver. With a 7-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 5,156 feet between the two airports. Denver International Airport sits higher than RAF Ascension Island. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Denver (DEN) to Ascension Island (ASI) follows a heading of 96° (east). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the RAF Ascension Island (ASI) and Denver International Airport (DEN) detail pages, or use our flight duration calculator to compare other routes.